Mobile-body navigation device and mobile-body navigation system

Abstract

A mobile-body navigation device includes a communication device 7 and a communication interface unit 9 , which constitute a receiving unit for receiving information about a deviation-prone connection route identified using probe information, a deviation-prone connection route caution instructing unit 14 for instructing to send a notification when a vehicle approaches a deviation-prone point on the guide route in accordance with the information about the deviation-prone connection route the receiving unit receives, and a display device 8 and a map display unit 13 , which constitute a display unit for displaying a guide map of the guide route in response to the instruction.

1 .- 6 . (canceled) 
     
     
         7 . A mobile-body navigation device comprising:
 a positional information acquiring unit that acquires positional information of a mobile body;   a route searching unit that searches for a recommended route using map data recorded in a map database, and the positional information and destination of the mobile body;   a communication device for transmitting, when the positional information of the mobile body comes within a prescribed range from a next connection point while the mobile body is moving along the recommended route, information about the connection to a server, and for receiving information about a deviation-prone connection route transmitted from the server in accordance with the information about the connection; and   a map display controller that causes a display device to display the information about the deviation-prone connection route.   
     
     
         8 . The mobile-body navigation device according to  claim 7 , wherein the map display controller displays on the display device the recommended route and a deviation-prone road on the deviation-prone connection route at the same time, displays the recommended route emphatically, and displays the deviation-prone road in a display mode that will call attention of a driver. 
     
     
         9 . A route display method of displaying a recommended route of a mobile body on a display device, the route display method comprising:
 a step of acquiring positional information of the mobile body;   a step of searching for the recommended route using map data, and the positional information and destination of the mobile body;   a step of transmitting, when the positional information of the mobile body comes within a prescribed range from a next connection point while the mobile body is moving along the recommended route, information about the connection to a server;   a step of receiving information about a deviation-prone connection route transmitted from the server in accordance with the information about the connection; and   a step of causing a display device to display the information about the deviation-prone connection route.   
     
     
         10 . A server for carrying out communication with a navigation device mounted on a mobile body, the server comprising:
 a database for storing information about a deviation-prone connection route of the mobile body; and   a communication interface for receiving information about a connection transmitted from the navigation device when positional information of the mobile body comes within a prescribed range from a next connection point while the mobile body is moving along a recommended route, and for transmitting, when receiving the information about the connection, the information about the deviation-prone connection route to the navigation device.   
     
     
         11 . The server according to  claim 10 , wherein the database stores the information about the deviation-prone connection route of the mobile body in accordance with each time period and each weather. 
     
     
         12 . A navigation system including a navigation device mounted in a mobile body and a server for carrying out communication with the navigation device, wherein
 the server comprises:
 a database for storing information about a deviation-prone connection route of the mobile body; and 
 a communication interface for receiving information about a connection transmitted from the navigation device when positional information of the mobile body comes within a prescribed range from a next connection point while the mobile body is moving along a recommended route, and for transmitting, when receiving the information about the connection, the information about the deviation-prone connection route to the navigation device, and wherein 
   the navigation device comprises:
 a positional information acquiring unit that acquires positional information of a mobile body; 
 a route searching unit that searches for a recommended route using map data recorded in a map database, and the positional information and destination of the mobile body; 
 a communication device for transmitting, when the positional information of the mobile body comes within a prescribed range from a next connection point while the mobile body is moving along the recommended route, information about the connection to a server, and for receiving information about a deviation-prone connection route transmitted from the server in accordance with the information about the connection; and 
 a map display controller that causes a display device to display the information about the deviation-prone connection route. 
   
     
     
         13 . A server for carrying out communication with a navigation device mounted on a mobile body, the server comprising:
 a database for storing information about a deviation-prone connection route of the mobile body in accordance with each time period and each weather; and   a communication interface for transmitting the information about the deviation-prone connection route to the navigation device.   
     
     
         14 . A navigation system including a navigation device mounted in a mobile body and a server for carrying out communication with the navigation device, wherein
 the server comprises:
 a database for storing information about a deviation-prone connection route of the mobile body in accordance with each time period and each weather; and 
 a communication interface for transmitting the information about the deviation-prone connection route to the navigation device, and wherein 
   the navigation device comprises:
 a positional information acquiring unit that acquires positional information of a mobile body; 
 a route searching unit that searches for a recommended route using map data recorded in a map database, and the positional information and destination of the mobile body; 
 a communication device for receiving information about the deviation-prone connection route transmitted from the server; and 
 a map display controller that causes a display device to display the information about the deviation-prone connection route. 
   
     
     
         15 . A mobile-body navigation device comprising:
 a positional information acquiring unit that acquires positional information of a mobile body;   a route searching unit that searches for a recommended route using map data recorded in a map database, and the positional information and destination of the mobile body;   a communication device for receiving information about a deviation-prone connection route transmitted from the server; and   a map display controller that displays on a display device the recommended route and a deviation-prone road on the deviation-prone connection route at the same time, for displaying the recommended route emphatically, and for displaying the deviation-prone road in a display mode that will call attention of a driver.   
     
     
         16 . A route display method of displaying a recommended route of a mobile body on a display device, the route display method comprising:
 a step of acquiring positional information of the mobile body;   a step of searching for the recommended route using map data, and the positional information and destination of the mobile body;   a step of receiving information about a deviation-prone connection route transmitted from a server; and   a step of displaying on a display device the recommended route and a deviation-prone road on the deviation-prone connection route at the same time, of displaying the recommended route emphatically, and of displaying the deviation-prone road in a display mode that will call attention of a driver.   
     
     
         17 . A navigation system including a navigation device mounted in a mobile body and a server for carrying out communication with the navigation device, wherein
 the server comprises:
 a database for storing information about a deviation-prone connection route of the mobile body; and 
 a communication interface for transmitting the information about the deviation-prone connection route to the navigation device, and wherein 
   the navigation device comprises:
 a positional information acquiring unit that acquires positional information of the mobile body; 
 a route searching unit that searches for a recommended route using map data recorded in a map database, and the positional information and destination of the mobile body; 
 a communication device for receiving information about the deviation-prone connection route transmitted from the server; and 
   a map display controller that displays on a display device the recommended route and a deviation-prone road on the deviation-prone connection route at the same time, for displaying the recommended route emphatically, and for displaying the deviation-prone road in a display mode that will call attention of a driver.